/** {@inheritDoc} */
@Override
public void stop() {
spi.setListener(null);
Map<String, List<GridDeployment>> copy;
synchronized (mux) {
copy = new HashMap<String, List<GridDeployment>>(cache);
for (Entry<String, List<GridDeployment>> entry : copy.entrySet()) {
entry.setValue(new ArrayList<GridDeployment>(entry.getValue()));
}
}
for (List<GridDeployment> deps : copy.values()) {
for (GridDeployment cls : deps) {
// We don't record event, as recording causes invocation of
// discovery manager which is already stopped.
undeploy(cls.classLoader(), /*don't record event. */ false);
}
}
if (log.isDebugEnabled()) {
log.debug(stopInfo());
}
}
/**
* Records undeploy event.
*
* @param dep Undeployed class loader.
* @param recordEvt Flag indicating whether to record events.
*/
private void recordUndeploy(GridDeployment dep, boolean recordEvt) {
assert dep.isUndeployed();
if (ctx.event().isRecordable(EVT_TASK_UNDEPLOYED)
|| ctx.event().isRecordable(EVT_CLASS_UNDEPLOYED)) {
for (Class<?> cls : dep.deployedClasses()) {
boolean isTask = isTask(cls);
String msg =
isTask ? "Task locally undeployed: " + cls : "Class locally undeployed: " + cls;
if (ctx.event().isRecordable(isTask ? EVT_TASK_UNDEPLOYED : EVT_CLASS_UNDEPLOYED)) {
if (recordEvt) {
GridDeploymentEvent evt = new GridDeploymentEvent();
evt.message(msg);
evt.nodeId(ctx.localNodeId());
evt.type(isTask ? EVT_TASK_UNDEPLOYED : EVT_CLASS_UNDEPLOYED);
evt.alias(getAlias(dep, cls));
ctx.event().record(evt);
}
}
if (log.isInfoEnabled()) {
log.info(msg);
}
}
}
}
/**
* @param alias Class alias.
* @return Deployed class.
*/
@Nullable
private GridDeployment getDeployment(String alias) {
assert Thread.holdsLock(mux);
LinkedList<GridDeployment> deps = cache.get(alias);
if (deps != null) {
assert !deps.isEmpty();
GridDeployment dep = deps.getFirst();
if (!dep.isUndeployed()) {
return dep;
}
}
return null;
}
/** {@inheritDoc} */
@Nullable
@Override
public GridDeployment getDeployment(GridUuid ldrId) {
synchronized (mux) {
for (List<GridDeployment> deps : cache.values()) {
for (GridDeployment dep : deps) {
if (dep.classLoaderId().equals(ldrId)) {
return dep;
}
}
}
}
for (GridDeployment dep : ctx.task().getUsedDeployments()) {
if (dep.classLoaderId().equals(ldrId)) {
return dep;
}
}
return null;
}
/**
* @param ldr Class loader to undeploy.
* @param recEvt Whether or not to record the event.
*/
private void undeploy(ClassLoader ldr, boolean recEvt) {
Collection<GridDeployment> doomed = new HashSet<GridDeployment>();
synchronized (mux) {
for (Iterator<LinkedList<GridDeployment>> i1 = cache.values().iterator(); i1.hasNext(); ) {
LinkedList<GridDeployment> deps = i1.next();
for (Iterator<GridDeployment> i2 = deps.iterator(); i2.hasNext(); ) {
GridDeployment dep = i2.next();
if (dep.classLoader() == ldr) {
dep.undeploy();
i2.remove();
doomed.add(dep);
if (log.isInfoEnabled()) {
log.info("Removed undeployed class: " + dep);
}
}
}
if (deps.isEmpty()) {
i1.remove();
}
}
}
for (GridDeployment dep : doomed) {
if (dep.isObsolete()) {
// Resource cleanup.
ctx.resource().onUndeployed(dep);
}
if (recEvt) {
recordUndeploy(dep, true);
}
}
}
/**
* Gets alias for a class.
*
* @param dep Deployment.
* @param cls Class.
* @return Alias for a class.
*/
private String getAlias(GridDeployment dep, Class<?> cls) {
String alias = cls.getName();
if (isTask(cls)) {
GridTaskName ann = dep.annotation(cls, GridTaskName.class);
if (ann != null) {
alias = ann.value();
}
}
return alias;
}
/**
* @param depMode Deployment mode.
* @param ldr Class loader to deploy.
* @param cls Class.
* @param alias Class alias.
* @return Deployment.
*/
@SuppressWarnings({"ConstantConditions"})
private GridDeployment deploy(
GridDeploymentMode depMode, ClassLoader ldr, Class<?> cls, String alias) {
assert Thread.holdsLock(mux);
LinkedList<GridDeployment> cachedDeps = null;
GridDeployment dep = null;
// Find existing class loader info.
for (LinkedList<GridDeployment> deps : cache.values()) {
for (GridDeployment d : deps) {
if (d.classLoader() == ldr) {
// Cache class and alias.
d.addDeployedClass(cls, alias);
cachedDeps = deps;
dep = d;
break;
}
}
if (cachedDeps != null) {
break;
}
}
if (cachedDeps != null) {
assert dep != null;
cache.put(alias, cachedDeps);
if (!cls.getName().equals(alias)) {
// Cache by class name as well.
cache.put(cls.getName(), cachedDeps);
}
return dep;
}
GridUuid ldrId = GridUuid.randomUuid();
long seqNum = seq.incrementAndGet();
String userVer = getUserVersion(ldr);
dep = new GridDeployment(depMode, ldr, ldrId, seqNum, userVer, cls.getName(), true);
dep.addDeployedClass(cls, alias);
LinkedList<GridDeployment> deps =
F.addIfAbsent(cache, alias, F.<GridDeployment>newLinkedList());
if (!deps.isEmpty()) {
for (GridDeployment d : deps) {
if (!d.isUndeployed()) {
U.error(
log,
"Found more than one active deployment for the same resource "
+ "[cls="
+ cls
+ ", depMode="
+ depMode
+ ", dep="
+ d
+ ']');
return null;
}
}
}
// Add at the beginning of the list for future fast access.
deps.addFirst(dep);
if (!cls.getName().equals(alias)) {
// Cache by class name as well.
cache.put(cls.getName(), deps);
}
if (log.isDebugEnabled()) {
log.debug("Created new deployment: " + dep);
}
return dep;
}
/** {@inheritDoc} */
@Nullable
@SuppressWarnings({"UnusedCatchParameter"})
@Override
public GridDeployment getDeployment(GridDeploymentMetadata meta) {
GridDeployment dep;
Class<?> cls = null;
String alias = meta.alias();
synchronized (mux) {
// Validate metadata.
assert meta.alias() != null;
dep = getDeployment(meta.alias());
if (dep != null) {
if (log.isDebugEnabled()) {
log.debug("Acquired deployment class from local cache: " + dep);
}
return dep;
}
GridDeploymentResource rsrc = spi.findResource(meta.alias());
if (rsrc != null) {
dep =
deploy(
ctx.config().getDeploymentMode(),
rsrc.getClassLoader(),
rsrc.getResourceClass(),
alias);
if (dep == null) {
return null;
}
if (log.isDebugEnabled()) {
log.debug("Acquired deployment class from SPI: " + dep);
}
}
// Auto-deploy.
else {
ClassLoader ldr = meta.classLoader();
if (ldr == null) {
ldr = Thread.currentThread().getContextClassLoader();
// Safety.
if (ldr == null) {
ldr = ctxLdr;
}
}
// Don't auto-deploy locally in case of nested execution.
if (ldr instanceof GridDeploymentClassLoader) {
return null;
}
try {
// Check that class can be loaded.
cls = ldr.loadClass(meta.alias());
spi.register(ldr, cls);
rsrc = spi.findResource(alias);
if (rsrc != null && rsrc.getResourceClass().equals(cls)) {
if (log.isDebugEnabled()) {
log.debug("Retrieved auto-loaded resource from spi: " + rsrc);
}
dep = deploy(ctx.config().getDeploymentMode(), ldr, cls, alias);
if (dep == null) {
return null;
}
} else {
U.warn(
log,
"Failed to find resource from deployment SPI even after registering it: "
+ meta.alias());
return null;
}
} catch (ClassNotFoundException e) {
if (log.isDebugEnabled()) {
log.debug(
"Failed to load class for local auto-deployment [ldr="
+ ldr
+ ", meta="
+ meta
+ ']');
}
return null;
} catch (GridSpiException e) {
U.error(log, "Failed to deploy local class: " + meta.alias(), e);
return null;
}
}
}
if (cls != null) {
recordDeploy(cls, alias, meta.isRecord());
dep.addDeployedClass(cls, meta.className(), meta.alias());
}
if (log.isDebugEnabled()) {
log.debug("Acquired deployment class: " + dep);
}
return dep;
}